• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

Tubes / Valves

All about our sweet vacuum tubes :) Threads about Musical Instrument Amps of all kinds should be in the Instruments & Amps forum
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bright switch to bias circuit?
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3
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2K
kevinkr
kevinkr
S
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Frank Philipse's tube site
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4
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2K
Gold_xyz
Gold_xyz
Stefanoo
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outstanding book??
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5
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2K
Stefanoo
Stefanoo
G
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Aikido sound?
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9
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6K
2wo
2
Klimon
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EL84 bias point
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2
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5K
rdf
rdf
W
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How to change this design from penthode to triode or UL
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8
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3K
bear
bear
A
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Capacitor above chassis
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14
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EC8010
EC8010
M
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Coupling cap rating
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4
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1K
jlsem
jlsem
J
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when the datasheet says "vertical mounting: up or down", does it mean...
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1
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1K
Tweeker
T
bembel
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what are the advantages of double core output transformers vs EI ?
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12
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12K
sparky813
S
V
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HOT Iron ?
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23
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4K
Tubelab_com
Tubelab_com
dsavitsk
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71a Line Stage and Miller Capacitance
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32
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10K
tomtt
tomtt
5u4
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Dropping filament volts/ L-W ramblings
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3
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2K
5u4
5u4
R
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Help with 300b proyect.
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6
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2K
RAFG
R
J
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motor run caps in the output? good or bad idea?
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36
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7K
Sheldon
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T
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about bi-cap
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1
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1K
Miles Prower
Miles Prower
SY
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DC Tube Amplifiers
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14
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3K
SY
SY
A
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Shuguang 807s?
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14
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5K
Miles Prower
Miles Prower
D
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Low pass active tube crossover
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2
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3K
mark845
M
J
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how to set current in G Pimm's latest self-biasing CCS circuit?
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0
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jarthel
J
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